(19)
(11) EP 4 440 019 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
09.10.2024 Bulletin 2024/41

(43) Date of publication A2:
02.10.2024 Bulletin 2024/40

(21) Application number: 24167054.6

(22) Date of filing: 27.03.2024
(51) International Patent Classification (IPC): 
H04L 1/00(2006.01)
H03M 13/00(2006.01)
 H03M 13/13(2006.01)
H04W 72/232(2023.01)
(52) Cooperative Patent Classification (CPC):
H04L 1/0057; H04L 1/0071; H03M 13/13; H04L 1/0067; H04L 1/0052; H03M 13/635; H04L 1/0072
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 30.03.2023 US 202318128707

(71) Applicant: Viavi Solutions Inc.
Chandler, AZ 85286 (US)

(72) Inventors:
  • DIZDAR, Onur
    London, W4 3DF (GB)
  • BROWN, Matthew David
    Hants, RG27 8DR (GB)
  • HOU, Jiancao
    Surbiton, KT6 7PD (GB)
  • LEUNG, Chi-ming
    Hardwick, CB23 7XL (GB)
  • SATTARZADEH HASHEMI, Ata
    Guildford, GU1 3NA (GB)
  • YAP, Yi Xien
    Potters Bar, EN6 1UP (GB)

(74) Representative: Murgitroyd & Company 
165-169 Scotland Street
Glasgow G5 8PL
Glasgow G5 8PL (GB)

   


(54) RECOVERING SCRAMBLING SEQUENCE INITIALIZATION FROM FROZEN BITS OF AN UNCODED DOWNLINK CONTROL INFORMATION VECTOR


(57) A device may receive a downlink signal from a base station and may determine an input-output relation of polar encoding based on a vector of the downlink signal. The device may perform an interleaving operation with a matrix and the input-output relation to obtain an interleaved vector and may utilize rate matching with the interleaved vector to determine a scrambling sequence of the downlink signal. The device may utilize a reverse sequence generator with the scrambling sequence to determine a scrambling sequence initialization vector for the scrambling sequence and may perform one or more actions based on the scrambling sequence initialization vector.







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Search report